I'll try and help you out with YW and AG fleet as those are the fleet that i travel on the most. Below are some YW tridents that i know which trim they have got.
4335, 4369, 4386, 4388, 4392, 4394 and 4395 all have light blue trim.
4333, 4334, 4337, 4338, 4339, 4342, 4344, 4363, 4371, 4372, 4383, 4391 all have grey trim.
4340, 4343, 4345, 4375 all have dark blue trim.
Any others i'll try and find out when i see them and update.
4335, 4369, 4386, 4388, 4392, 4394 and 4395 all have light blue trim.
4333, 4334, 4337, 4338, 4339, 4342, 4344, 4363, 4371, 4372, 4383, 4391 all have grey trim.
4340, 4343, 4345, 4375 all have dark blue trim.
Any others i'll try and find out when i see them and update.