Ot , changing colors in xst lines , as time lines

I am working now [ amongst other works] on sometinhg , that should symbolize time lines/changes. The basic shape of the work is suggeting it , but i find that changing the colors of the lines , also adds to this feeling of changing times , just like leaves changing their colors, Like Daylight become Nightdarkness ,,, there is something Natural , in color changes that hints at the fluidity of time. mirjam