FBO and MRT and colormask

OpenGL OpenGL: Advanced Coding
1

Hi,
Is it possible to set different color masks (glColorMask) to different color attachments?
When I call

glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);
glColorMask(0, 0, 1, 1);

It sets color mask to all color attachments in FBO.

Thanks.

2

EXT_draw_buffers2 allows this. Otherwise, no.