Is it possible to have the cauges background coloured white and the numbers and the needle on it is black or just some darker color, as I've seen such cauges before on screenshots and wasn't really sure, or are they photoshopped?
There is a mod that puts overlays on your screen with skinnable guages - but for this to work properly you need to be using a cockpit view with proper FOV and steering wheel and arms disabled (because these will be displayed over top of them and look like a HUD instead of proper guages) but there is currently no real way to change the guages on the cars themselves.