How to see the size and bit depth of an image? Simply right click the mouse on an image and go down to Properties. Go to the Details tab and scroll down a little. You will see the size and bit depth listed.
Introversion Forum Fighter Graphics: Lots of them. https://forums.introversion.co.uk/viewtopic.php?f=8&t=2392&hilit=fighter+graphics+mod
At 4 minutes should have said you adjust map colors via the menu there using the color picker which is a color document when saved that can be placed in any map mod or the game folder.
Gameplay Twist presently has 12,205 views for DEFCON across 12 videos, and about 3 hours worth of DEFCON videos were uploaded to his channel. This is 1.40% of the total watchable video on Gameplay Twist's YouTube channel.