Warning lights, dull

Best guess is that the coloured plastic lens has got less see through with age and being in the sun maybe, I'm guessing that the warning lights are above the speedo and rev counter on your model? The only other thing that I could think off is that the bulbs have dropped down a bit from where they should sit or perhaps they are covered in dust.

Not sure how difficult it is to get to but might be worth see how easy it is to look at the bulbs in the first instance.

Cheers

Steve