blueprint-dashboard: Switch weston background image to new logo

Match it to the new bootscreen and adjust background color as well.

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

meta-ohos-blueprints/conf/distro/oniro-linux-blueprint-dashboard.conf

@@ -39,8 +39,8 @@ EPIPHANY_URL = "http://localhost:8123"
 EPIPHANY_RDEPENDS = "python3-homeassistant"
 EPIPHANY_SERVICE_ENABLED = "1"
 
-WESTON_INI_BACKGROUND_IMAGE = "/usr/share/backgrounds/ostc-logo-small-loading.png"
-WESTON_INI_BACKGROUND_COLOR = "0xffffffff"
+WESTON_INI_BACKGROUND_IMAGE = "/usr/share/backgrounds/oniro-logo-small.png"
+WESTON_INI_BACKGROUND_COLOR = "0xff0f0026"
 WESTON_INI_BACKGROUND_TYPE = "centered"
 
 # SmartHome IoT devices BLE interfaces MAC addresses