Command Line Options and Color Themes

[caleb-james-smith]

Do not merge until all features are tested!!

• introduce new color themes (default is bright)
• use command line option to set color theme
• command line option for listing available color themes

[caleb-james-smith]

Now this MR has been tested. This is good because some bugs were fixed.

• corrected log for color settings
• fixed color settings with self references
• fixed merge conflicts
• fixed clear button