Best brand for glass colors

Hi Ladies,

I'm interested in glass paintings so i bought hobby ideas glass paints and started painting..but the problem is those colors came in bottle and they provided nozzle for each bottle..when i'm using with nozzle, its leaking.. for the time being, i'm using brush..
Which one is the best glass colors brand available in india..can we get those colors in tubes instead of bottles?? What is the Best store in hyd(preferably in kphb)

Cheers,
Lakshmi

 

Thank you saroj