your vivid red cocktail is a candy paint - this means that the red is actually a slightly see through ink that is applied over a base colour (in this case silver) and then lacquered. it looks fantastic when done right but with 4 or 5 different paints to apply (etch perhaps, primer, silver, ink, lacquer) there's plenty of scope to introduce flaws.
the other trouble with candy finishes is colour matching. different base colours will give a different shade of finish. so will different numbers of ink coats. only a very experienced painter will know how many coats of ink are needed to match an existing finish, this being learned through trial and error as yamaha won't let on! even when number of gun passes is known it's difficult not to overlap ink coats to existing areas thus introducing a 'ring' type effect around a repair.
so for perfect bodywork so you have two options - either pay (a large amount of money to) an experienced bike painter or re-paint the lot.
if you have access to a shed or garage with a heater that you can clear and clean it's not beyond a do it yourself task. you can budget well over £100 for paint in aerosol format, less if you have a compressor and gun and buy it by the pot. (really it should be painted through a gun with plasticiser added for the plastics and petrol resistant lacquer for the tank, again bumping up the cost) you'll also need a machine polisher, compound and various other sundries and a great deal of patience with a meticulous attention to detail.
and that's just for one colour work! there's more grief when there's multiple colours to be applied.
with reference to the above it can be seen why bike painting is expensive.