The figure shows the light curve in V band and V-J color variation of OJ 287. The object has recently been faded. The color became bluer. The object, thus, shows the feature of the redder-when-brighter trend.
Data policy: Please contact Dr. Makoto Uemura (uemuram_at_hiroshima-u.ac.jp)
if you want to use the data shown in the blog for your research.