it's B.E. just B or BENDY or full tittle BENDYCAT ELEVENTEEN
But back to business - if you have a colour mag it will not dye / bleach to white - the colour was added when in the making process
you can change and cover the colour if 1 it is a light colour and 2 if you are going darker - in school they taught this but like me some may not have paid much attention
so if they are turquoise you may be able to turn them green - forest green - jungle green but i would say best is emrald green
so faded yellow can be a bright clean yellow again with some dylon dye - white can be any colour you want - but if using the mags on a ride, you will have brake rub, this will show the true colour under what you have dyed over it
put up some pic's mate
cheers B