It is indeed a very pale blue. Compared to the Squadron putties it has a much finer grain to it. Which is why autobody artisans us it for filling fine imperfections. The neutral blue color is easily covered by light colors. The 3M Acryl glazing bits well into the plastic and holds without shrinkage. It dries fast and can be sanded within 30 minutes...unless you glob it on really thick.
It can be thinned with alcohol or lacquer thinner for application with a brush or as is using a putty blade, pallete knife, finger or hobby knife. It does have a noticable odor, but I use it in small quanities and return the cap back on to the tube, never leaving it off any longer than it takes to transfer the putty onto the surface I want it.
Working time is short, so if you reach a point where it is beginning to 'crumble', stop and let it dry before going any further. Several light applications are better than one deep troweled on one. It sands and feathers so smooth, I can apply a NMF directly over it!