Hi,
More details will be required about your configuration.
Are you editing the right menu/module ?
Do you have some specific CSS which could affect the background color ?
Do you have some view override ?
Which HikaShop version are you using ?
Do you have a link to your store (and this specific page you put as screenshot).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.