pro colorbry, red, green, blue

; Color table with blue-red-yellow-white scale

common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr

red=fltarr(256) & green=fltarr(256) & blue=fltarr(256)
r=fltarr(14)    & g=fltarr(14)      & b=fltarr(14)
r=[0.0, 0.0, 0.2, 0.4, 0.6, 0.8, 0.9, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
g=[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.2, 0.4, 0.6, 0.8, 0.9, 1.0]
b=[0.0, 0.8, 1.0, 1.0, 0.9, 0.6, 0.3, 0.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.9]

n=!d.table_size-1

re=interpol(r,n)
gr=interpol(g,n)
bl=interpol(b,n)
red(0:n-1)=re
green(0:n-1)=gr
blue(0:n-1)=bl
red(0)=0.
green(0)=0.
blue(0)=0.
red(n:255)=1.
green(n:255)=1.
blue(n:255)=1.
red=bytscl(red)
green=bytscl(green)
blue=bytscl(blue)

tvlct,red,green,blue

r_orig=red
g_orig=green
b_orig=blue
r_curr=red
g_curr=green
b_curr=blue

return
end