Turn COLORSPACE_HEADERS on by default

Change-Id: I01b93661a6a46f4909b83a5bade5aac94ef8c4f9
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 11ac439..b704ddc 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -92,7 +92,7 @@
 set(CONFIG_CDF_UPDATE_MODE 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CFL 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CICP 1 CACHE NUMBER "AV1 experiment flag.")
-set(CONFIG_COLORSPACE_HEADERS 0 CACHE NUMBER "AV1 experiment flag.")
+set(CONFIG_COLORSPACE_HEADERS 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_DEPENDENT_HORZTILEGROUPS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_DEPENDENT_HORZTILES 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_DIST_8X8 1 CACHE NUMBER "AV1 experiment flag.")