Problem with dots on macos mojave I updated my iMac and now I get dark blue and light blue color on the “dots” to close fullscreen instead of the normal green, yellow and red dots.

Can someone help me or this is or is this how the new OS looks?
Using the answer space as somewhere to park the image for now…

It looks  like you have a 180° Hue shift. I can achieve the same intentionally in Photoshop by doing that - note how it also affects all the icon colours in the same way too.



Two things to test.  


Post a screenshot as well as your photo, to check whether it looks the same [hardware test]. 
Check Displays > Colour &amp; make sure you have the correct profile chosen. Try a few different ones &amp; see if they make any significant difference.


From comments above - &amp; I had already tested this before posting this answer…
It doesn't look like Accessibility Colour Inversion, because even if you're set to Dark Mode, most of the Control Panel will look similar to these images, but icons such as Mouse would have turned black.