Thanks First of all! -
i have done most of the main ships of all tech trees - save for all of the tier 1's and a few lower tiers for now. i will come back to them eventually in later updates.
If you were viewing the tech tree, since i haven't made any changes to the un-researched icons, they stay the same. but my icons will show if already researched, or, if it is next in line to be researched. as you can see below that I have not yet researched Tashkent, but if you mouse over it, its there.
if those arn't what's going on exactly, please let me know ^^