How can I reduce the amount of similar commands into a loop?
Something like
pictureBox7.BackColor = Color.FromArgb(187, 187, 187);
pictureBox9.BackColor = Color.FromArgb(187, 187, 187);
pictureBox10.BackColor = Color.FromArgb(187, 187, 187);
pictureBox11.BackColor = Color.FromArgb(187, 187, 187);
pictureBox12.BackColor = Color.FromArgb(187, 187, 187);
pictureBox13.BackColor = Color.FromArgb(187, 187, 187);
G2g for now, will add on later.