The picture has a pink and reddish hue

There is a function in your camera setup menu to format memory cards. It won't make any difference to the reddish hue of the pictures, but it will delete everything on the card.

No, you can use any SD card, and in fact you are using the card you have. Your camera can take and display pictures, so it is using already. These cards are digital- they either work or they don't. You might get a corrupted picture file but a memory fault wouldn't just add a hue to all shots like a film might.

It won't hurt to get a new card and try it- then you can tell them that you did what they said and it didn't help. The card will be of use as a spare or to hold more shots on holiday. At some point you need to return this camera as it seems to have a fault, but it sounds like they are trying to blame the old card instead of giving you a replacement or repair.

Any magician can make a trick look easy - but NOTHING replaces years of training and experience. That said, here's your answer:

1. Enter the I2C Service Menu, be sure the power is OFF.
2. On the front control panel, press and hold the INPUT button. Then press the POWER button for two seconds. You may keep the INPUT button depressed until you see the OSD with the Service Menu displayed.

If you don't see the service menu, please repeat Process making sure you wait until the Power blinking LED stops.
COPY DOWN THESE SETTINGS:
IMPORTANT: The following are Service Adjustments. These Data Values are lost when Memory Initialization is preformed. It's important to write the values down before proceeding.
H Position: ________
V Position: ________
LCD ADJUST (NOT LCD DRIVE) (Arrow right)
GHOST (Arrow right)> LCD ADJUST =SHP: _______
(Press Select) LCD ADJUST GHOST=R: _______
(Press Select) LCD ADJUST GHOST=G: _______
(Press Select) LCD ADJUST GHOST=B: _______
(Press Select, then Exit)
V COM (Arrow right)> V COM-R: Set For Minimum Flicker
(Press Select) V COM-G: Set For Minimum Flicker
(Press Select) V COM-B: Set For Minimum Flicker
(Press Select, then Exit)
NRSH (Arrow right)> VS-DAT 1 through 9: _______, _______, _______, _______, _______, _______, _______, _______, _______ (Press exit twice)

Scroll down to: “TA1383” then (Arrow right)
Scroll down to:
CONTM1: _______
CONTS1: _______ (Press exit)
After writing down these values, please continue:

Sounds like the sensor ribbon has slightly come out of it's socket.
Just needs re seating

See this link regarding the strange colors and horizontal lines on your LCD. A bad image sensor (CCD) can cause the issues you describe.

Depending on your TV, you may have a Color Temperature (Color Temp) and/or Hue setting in the menu. Use these options to adjust the picture to the setting that best suits your viewing preference.
If your TV has a Color Temp setting, you will normally have the following options to select from:

• Cool: Gives the picture a cooler, slightly bluish appearance.
• Neutral: Gives the picture a neutral, more natural look and appearance.
• Warm: Gives the picture a warmer, slightly reddish appearance.

If your TV has a Hue setting, follow the appropriate step below to make adjustments:

1. Move the setting to the right to reduce the reddish appearance.
2. Move the setting to the left to reduce the greenish appearance.

Remove speaker grill, manually adjust red drive untill red is normal.

Try turning down (off) the color during such an episode. If the image is tinted pink or green instead of black and white when you do this,you have either an intermittent short in your CRT (tube), which is terminal,or a gun drive problem, which may be repairable. If you're feeding it component instead of composite signal,it may just be a bad connection of the B-Y cable.

is the TV still under warranty. if it is I would call Vizio and request a main board be switch and if it is not under warranty I would call a TV Repair shop and have them put in a Main Board.

http://esupport.sony.com/perl/news-item.pl?news_id=24
and try this
Sony Picture tube recall
http://esupport.sony.com/perl/news-item.pl?news_id=24
Which models are affected with the "flicker" problem?
A1: There are 12 models in total: KDP57XBR2, KDP65XBR2, KP46WT500, KP51HW40, KP51WS500, KP57HW40, KP57WS500, KP57WV600, KP57WV700, KP65WS500, KP65WV600 and KP65WV700

Needs color wheel. What's the model #?