My car's V-KOOL's tint starting to change colour from green to brown. I've heard there's a better tint called S.I.R. Film and waranteed by V-KOOL and another company for 10 years? The colour is very natural and you won't notice that your car got tinted unless you look closely. Has anyone used this tint and know around how much is the price of this tint. TY..