>Is it possible to change the color a bootstrap button if a condition exists?
>If so, can you please post some sample code?

Not clear if you want change the color at run time or while rendering the html. In either case, there are several classes built into bootstrap to change the color. If that is not what you want then you can always create your own classes to override the bootstrap classes. Jquery makes it easy to change at run time or in php you just us a condition to apply the appropriate class.