diff --git a/manimlib/__init__.py b/manimlib/__init__.py
index 4a63f22d..0b7b39dc 100644
--- a/manimlib/__init__.py
+++ b/manimlib/__init__.py
@@ -16,15 +16,11 @@ from manimlib.animation.update import *
 
 from manimlib.camera.camera import *
 
-# This must be called before manimlib.mobject.interactive
-from manimlib.window import *
-
 from manimlib.mobject.coordinate_systems import *
 from manimlib.mobject.changing import *
 from manimlib.mobject.frame import *
 from manimlib.mobject.functions import *
 from manimlib.mobject.geometry import *
-from manimlib.mobject.interactive import *
 from manimlib.mobject.matrix import *
 from manimlib.mobject.mobject import *
 from manimlib.mobject.number_line import *
@@ -46,18 +42,8 @@ from manimlib.mobject.mobject_update_utils import *
 from manimlib.mobject.value_tracker import *
 from manimlib.mobject.vector_field import *
 
-from manimlib.once_useful_constructs.arithmetic import *
-from manimlib.once_useful_constructs.combinatorics import *
-from manimlib.once_useful_constructs.complex_transformation_scene import *
-from manimlib.once_useful_constructs.counting import *
-from manimlib.once_useful_constructs.fractals import *
-from manimlib.once_useful_constructs.graph_theory import *
-from manimlib.once_useful_constructs.light import *
-
 from manimlib.scene.scene import *
-from manimlib.scene.sample_space_scene import *
 from manimlib.scene.three_d_scene import *
-from manimlib.scene.vector_space_scene import *
 
 from manimlib.utils.bezier import *
 from manimlib.utils.color import *
diff --git a/manimlib/animation/animation.py b/manimlib/animation/animation.py
index 2d16c891..8a6cd8c9 100644
--- a/manimlib/animation/animation.py
+++ b/manimlib/animation/animation.py
@@ -1,6 +1,7 @@
 from copy import deepcopy
 
-from manimlib.mobject.mobject import Mobject, _AnimationBuilder
+from manimlib.mobject.mobject import _AnimationBuilder
+from manimlib.mobject.mobject import Mobject
 from manimlib.utils.config_ops import digest_config
 from manimlib.utils.rate_functions import smooth
 from manimlib.utils.simple_functions import clip
diff --git a/manimlib/constants.py b/manimlib/constants.py
index 5141194e..4273519e 100644
--- a/manimlib/constants.py
+++ b/manimlib/constants.py
@@ -71,63 +71,68 @@ BOLD = "BOLD"
 DEFAULT_STROKE_WIDTH = 4
 
 # Colors
-COLOR_MAP = {
-    "BLUE_E": "#1C758A",
-    "BLUE_D": "#29ABCA",
-    "BLUE_C": "#58C4DD",
-    "BLUE_B": "#9CDCEB",
-    "BLUE_A": "#C7E9F1",
-    "TEAL_E": "#49A88F",
-    "TEAL_D": "#55C1A7",
-    "TEAL_C": "#5CD0B3",
-    "TEAL_B": "#76DDC0",
-    "TEAL_A": "#ACEAD7",
-    "GREEN_E": "#699C52",
-    "GREEN_D": "#77B05D",
-    "GREEN_C": "#83C167",
-    "GREEN_B": "#A6CF8C",
-    "GREEN_A": "#C9E2AE",
-    "YELLOW_E": "#E8C11C",
-    "YELLOW_D": "#F4D345",
-    "YELLOW_C": "#FFFF00",
-    "YELLOW_B": "#FFEA94",
-    "YELLOW_A": "#FFF1B6",
-    "GOLD_E": "#C78D46",
-    "GOLD_D": "#E1A158",
-    "GOLD_C": "#F0AC5F",
-    "GOLD_B": "#F9B775",
-    "GOLD_A": "#F7C797",
-    "RED_E": "#CF5044",
-    "RED_D": "#E65A4C",
-    "RED_C": "#FC6255",
-    "RED_B": "#FF8080",
-    "RED_A": "#F7A1A3",
-    "MAROON_E": "#94424F",
-    "MAROON_D": "#A24D61",
-    "MAROON_C": "#C55F73",
-    "MAROON_B": "#EC92AB",
-    "MAROON_A": "#ECABC1",
-    "PURPLE_E": "#644172",
-    "PURPLE_D": "#715582",
-    "PURPLE_C": "#9A72AC",
-    "PURPLE_B": "#B189C6",
-    "PURPLE_A": "#CAA3E8",
-    "GREY_E": "#222222",
-    "GREY_D": "#444444",
-    "GREY_C": "#888888",
-    "GREY_B": "#BBBBBB",
-    "GREY_A": "#DDDDDD",
-    "WHITE": "#FFFFFF",
-    "BLACK": "#000000",
-    "GREY_BROWN": "#736357",
-    "DARK_BROWN": "#8B4513",
-    "LIGHT_BROWN": "#CD853F",
-    "PINK": "#D147BD",
-    "LIGHT_PINK": "#DC75CD",
-    "GREEN_SCREEN": "#00FF00",
-    "ORANGE": "#FF862F",
-}
-PALETTE = list(COLOR_MAP.values())
-locals().update(COLOR_MAP)
-for name in [s for s in list(COLOR_MAP.keys()) if s.endswith("_C")]:
-    locals()[name.replace("_C", "")] = locals()[name]
+BLUE_E = "#1C758A"
+BLUE_D = "#29ABCA"
+BLUE_C = "#58C4DD"
+BLUE_B = "#9CDCEB"
+BLUE_A = "#C7E9F1"
+TEAL_E = "#49A88F"
+TEAL_D = "#55C1A7"
+TEAL_C = "#5CD0B3"
+TEAL_B = "#76DDC0"
+TEAL_A = "#ACEAD7"
+GREEN_E = "#699C52"
+GREEN_D = "#77B05D"
+GREEN_C = "#83C167"
+GREEN_B = "#A6CF8C"
+GREEN_A = "#C9E2AE"
+YELLOW_E = "#E8C11C"
+YELLOW_D = "#F4D345"
+YELLOW_C = "#FFFF00"
+YELLOW_B = "#FFEA94"
+YELLOW_A = "#FFF1B6"
+GOLD_E = "#C78D46"
+GOLD_D = "#E1A158"
+GOLD_C = "#F0AC5F"
+GOLD_B = "#F9B775"
+GOLD_A = "#F7C797"
+RED_E = "#CF5044"
+RED_D = "#E65A4C"
+RED_C = "#FC6255"
+RED_B = "#FF8080"
+RED_A = "#F7A1A3"
+MAROON_E = "#94424F"
+MAROON_D = "#A24D61"
+MAROON_C = "#C55F73"
+MAROON_B = "#EC92AB"
+MAROON_A = "#ECABC1"
+PURPLE_E = "#644172"
+PURPLE_D = "#715582"
+PURPLE_C = "#9A72AC"
+PURPLE_B = "#B189C6"
+PURPLE_A = "#CAA3E8"
+GREY_E = "#222222"
+GREY_D = "#444444"
+GREY_C = "#888888"
+GREY_B = "#BBBBBB"
+GREY_A = "#DDDDDD"
+WHITE = "#FFFFFF"
+BLACK = "#000000"
+GREY_BROWN = "#736357"
+DARK_BROWN = "#8B4513"
+LIGHT_BROWN = "#CD853F"
+PINK = "#D147BD"
+LIGHT_PINK = "#DC75CD"
+GREEN_SCREEN = "#00FF00"
+ORANGE = "#FF862F"
+
+# Abbreviated names for the "median" colors
+BLUE = BLUE_C = "#58C4DD"
+TEAL = TEAL_C = "#5CD0B3"
+GREEN = GREEN_C = "#83C167"
+YELLOW = YELLOW_C = "#FFFF00"
+GOLD = GOLD_C = "#F0AC5F"
+RED = RED_C = "#FC6255"
+MAROON = MAROON_C = "#C55F73"
+PURPLE = PURPLE_C = "#9A72AC"
+GREY = GREY_C = "#888888"
diff --git a/manimlib/scene/scene.py b/manimlib/scene/scene.py
index 60cd5fad..5cd2283c 100644
--- a/manimlib/scene/scene.py
+++ b/manimlib/scene/scene.py
@@ -9,7 +9,6 @@ from tqdm import tqdm as ProgressDisplay
 import numpy as np
 import time
 import moderngl
-from IPython.terminal.embed import InteractiveShellEmbed
 
 from manimlib.animation.animation import prepare_animation
 from manimlib.animation.transform import MoveToTarget
@@ -23,7 +22,6 @@ from manimlib.utils.family_ops import extract_mobject_family_members
 from manimlib.utils.family_ops import restructure_list_to_exclude_certain_family_members
 from manimlib.event_handler.event_type import EventType
 from manimlib.event_handler import EVENT_DISPATCHER
-from manimlib.window import Window
 
 
 class Scene(object):
@@ -45,6 +43,7 @@ class Scene(object):
     def __init__(self, **kwargs):
         digest_config(self, kwargs)
         if self.preview:
+            from manimlib.window import Window
             self.window = Window(scene=self, **self.window_config)
             self.camera_config["ctx"] = self.window.ctx
         else:
@@ -119,7 +118,8 @@ class Scene(object):
         self.stop_skipping()
         self.linger_after_completion = False
         self.update_frame()
-
+        
+        from IPython.terminal.embed import InteractiveShellEmbed
         shell = InteractiveShellEmbed()
         # Have the frame update after each command
         shell.events.register('post_run_cell', lambda *a, **kw: self.update_frame())
diff --git a/manimlib/utils/color.py b/manimlib/utils/color.py
index efe5e5b7..d9e0013d 100644
--- a/manimlib/utils/color.py
+++ b/manimlib/utils/color.py
@@ -2,9 +2,7 @@ import random
 
 from colour import Color
 import numpy as np
-from matplotlib.cm import get_cmap
 
-from manimlib.constants import PALETTE
 from manimlib.constants import WHITE
 from manimlib.utils.bezier import interpolate
 from manimlib.utils.simple_functions import clip_in_place
@@ -102,7 +100,7 @@ def random_bright_color():
 
 
 def random_color():
-    return random.choice(PALETTE)
+    return Color(rgb=(random.random() for i in range(3)))
 
 
 def get_shaded_rgb(rgb, point, unit_normal_vect, light_source):
@@ -116,6 +114,8 @@ def get_shaded_rgb(rgb, point, unit_normal_vect, light_source):
 
 
 def get_colormap_list(map_name="viridis", n_colors=9):
+    from matplotlib.cm import get_cmap
+
     rgbs = get_cmap(map_name).colors  # Make more general?
     return [
         rgbs[int(n)]
diff --git a/manimlib/utils/file_ops.py b/manimlib/utils/file_ops.py
index 75587761..19322825 100644
--- a/manimlib/utils/file_ops.py
+++ b/manimlib/utils/file_ops.py
@@ -1,8 +1,6 @@
 import os
 import numpy as np
-
 import validators
-import urllib.request
 
 
 def add_extension_if_not_present(file_name, extension):
@@ -23,6 +21,7 @@ def find_file(file_name, directories=None, extensions=None):
     # Check if this is a file online first, and if so, download
     # it to a temporary directory
     if validators.url(file_name):
+        import urllib.request
         from manimlib.utils.directories import get_downloads_dir
         stem, name = os.path.split(file_name)
         folder = get_downloads_dir()
diff --git a/manimlib/utils/sounds.py b/manimlib/utils/sounds.py
index 2cc8a124..c2e43269 100644
--- a/manimlib/utils/sounds.py
+++ b/manimlib/utils/sounds.py
@@ -1,37 +1,7 @@
-import os
 from manimlib.utils.file_ops import find_file
 from manimlib.utils.directories import get_sound_dir
 
 
-def play_chord(*nums):
-    commands = [
-        "play",
-        "-n",
-        "-c1",
-        "--no-show-progress",
-        "synth",
-    ] + [
-        "sin %-" + str(num)
-        for num in nums
-    ] + [
-        "fade h 0.5 1 0.5",
-        ">",
-        os.devnull
-    ]
-    try:
-        os.system(" ".join(commands))
-    except Exception:
-        pass
-
-
-def play_error_sound():
-    play_chord(11, 8, 6, 1)
-
-
-def play_finish_sound():
-    play_chord(12, 9, 5, 2)
-
-
 def get_full_sound_file_path(sound_file_name):
     return find_file(
         sound_file_name,