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While snicklas is 100% right with the color of the led matching what type of lenses you are trying to pass the light through there is one other factor to keep in mind. The original bulbs in your cab lights will be what we'll use for an example cause it's what I have the best example picture of above on my 250 gasser on the left above and 150 gasser on the right from the video I posted.
The original bulbs in all of these things are halogen, so there a "yellow white" like 3500k color temp. If you replace it with something similar color temp like a "warm yellow", then you will more likely get the same shade of color output. Brightness will just depend on the quality of the bulb mostly.
If you replace the bulbs with an "Amber" bulb then the color is going to be darker as its a darker shade of light then the original bulb was. For example look at my 250 on the left in that picture, not that it looks bad or anything but they are way less bright and a darker shade. Same bulbs same manufacturer, just ordered one set of 20 as Amber and one set as warm yellow to see what I liked better and ended up putting the Amber on the black truck and warm yellow on the brown 150.
Just some random food for thought. Obviously the crap phone camera jacks up the example some, neither are quite that blindingly bright in person but you can tell the difference at least haha.