UnNeb

When I bought my 2007 Is350, A previous owner had installed Vland taillight's, but it was the Red glass and In my opinion it doesn't look as great as something like the smoked or clear, I was just wondering if there is a way to swap the glass or am I stuck with the current taillight colour? I don't want to buy new taillights as it is not worth it but I was just wondering if this is an option, Thanks.