Some pictures downloaded from openclipart.org are shown as black in Gallery app

[Evan Wang]

$ adb shell system-image-cli -i
current build number: 121
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2015-09-11 06:22:16
version version: 121
version ubuntu: 20150911
version device: 20150821-736d127
version custom: 20150821-887-33-32-vivid

Steps to reproduce:
1. open up browser and go to openclipart.org
2. scroll to the "New Clipart" section
3. long press on one thumbnail(refer to the pictures attached) select "Save image"
4. select Gallery to Open with
5. once a notification is displayed with "Download Complete" message" click on "Open" button
6. the Gallery is displayed and the downloaded picture is shown in the Events view

Expected results:
The pictures downloaded are shown correctly

Actual results:
The pictures downloaded are shown as black
not found more differences from other pictures except they are all black-white pictures.